import Vue from 'vue'
import VueRouter from 'vue-router'
import store from "@/store";

Vue.use(VueRouter)

const routes = [
	{
		path: '/login',
		name: 'Login',
		component: () => import('../views/Login.vue')
	},
	{
		path: '/register',
		name: 'Register',
		component: () => import('../views/Register.vue')
	},
	{
		path: '/404',
		name: '404',
		component: () => import('../views/404.vue')
	},
]

const router = new VueRouter({
	mode: 'history',
	base: process.env.BASE_URL,
	routes
})

// 提供一个重置路由的方法
export const resetRouter = () => {
	router.matcher = new VueRouter({
		mode: 'history',
		base: process.env.BASE_URL,
		routes
	})
}

// 注意：刷新页面会导致页面路由重置
export const setRoutes = () => {
	const storeMenus = localStorage.getItem("menus");

	if (storeMenus) {

		// 获取当前的路由对象名称数组
		const currentRouteNames = router.getRoutes().map(v => v.name)
		if (!currentRouteNames.includes('Manage')) {
			// 拼装动态路由
			const manageRoute = {
				path: '/',
				name: '',
				component: () => import('../views/Manage.vue'),
				children: [{
						path: 'person',
						name: '个人信息',
						component: () => import('../views/Person.vue')
					},
					{
						path: 'password',
						name: '修改密码',
						component: () => import('../views/Password.vue')
					}, 
					{
						path: '/home',
						name: '',
						component: () => import('../views/Home.vue')
					}
				]
			}
			const menus = JSON.parse(storeMenus)
			menus.forEach(item => {
				if (item.path) { // 当且仅当path不为空的时候才去设置路由
					let itemMenu = {
						path: item.path.replace("/", ""),
						name: item.name,
						component: () => import('../views/' + item.pagePath + '.vue')
					}
					manageRoute.children.push(itemMenu)
				} else if (item.children.length) {
					item.children.forEach(item => {
						if (item.path) {
							let itemMenu = {
								path: item.path.replace("/", ""),
								name: item.name,
								component: () => import('../views/' + item.pagePath + '.vue')
							}
							manageRoute.children.push(itemMenu)
						}
					})
				}
			})
			// 动态添加到现在的路由对象中去
			router.addRoute(manageRoute)
		}

	}
}

// 重置我就再set一次路由
setRoutes()


router.beforeEach((to, from, next) => {
	localStorage.setItem("currentPathName", to.name) // 设置当前的路由名称
	store.commit("setPath")

	// 未找到路由的情况
	if (!to.matched.length) {
		const storeMenus = localStorage.getItem("menus")
		if (storeMenus) {
			next("/404")
		} else {
			// 跳回登录页面
			next("/login")
		}
	}
	// 其他的情况都放行
	next()

})

export default router
